Vehicle control system
AssigneeDenso Corporation
InventorsToshiki Matsumoto, Mamoru Sawada, Takehito Fujii
Life of this patent
Estimating the term…
Abstract
A vehicle control system controls vibrations that are generated at a plurality of portions of a vehicle. An engine/drive system ECU and a brake system ECU store the same vehicle vibration model that is separated into a vehicle body vibration model, a chassis vibration model and a tire vibration model, respectively. The engine/drive system ECU controls the suppression of the vehicle body vibrations that are estimated from the vehicle vibration model and the brake system ECU controls the suppression of the chassis vibrations and the tire vibrations. Accordingly, it is easy to execute control for suppressing the respective vibrations.
Claims14
A vehicle control system disposed within a vehicle, the vehicle control system comprising:
- a first control unit and a second control unit that respectively store the same vehicle vibration model on a computer readable medium that is separated into a vehicle body vibration model, a chassis vibration model and a tire vibration model to estimate vibration states of various portions of a vehicle;
- and
- a first operation device and a second operation device, which are controllable by the first control unit and the second control unit, respectively, to change motion states of the vehicle,
- wherein the first control unit and the second control unit receive the same input parameters to be input to the vehicle vibration model and calculate estimated vibration states of the various portions of the vehicle, respectively,
- wherein the first control unit and the second control unit share subject models to be controlled in vibration suppression among the vehicle body vibration model, the chassis vibration model and the tire vibration model,
- wherein the first control unit and the second control unit calculate control quantities according to the vibration states in the subject models to control the first operation device and the second operation device, respectively, and
- wherein the first control unit calculates estimated vibration states at a first frequency and the second control unit calculates estimated vibration states at a second frequency, the second frequency being different than the first frequency.
Dependencies are inferred from the claim text.